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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12777840 B1

PDFFull Text
Date of Patent:
Oct. 27, 2026

Filed:

Jul. 01, 2022

Exciplex based organic electroluminescent device, display panel, and display device

Applicant:

Boe Technology Group Co., Ltd., Beijing, CN;

Inventors:

Lixia Qiu, Beijing, CN;

Lei Chen, Beijing, CN;

Dongxu Zhang, Beijing, CN;

Bingyan Liang, Beijing, CN;

Assignee:

Beijing BOE Technology Development Co., Ltd., Beijing, CN;

Attorney:

IPro, PLLC

Primary Examiner:

Duy T Nguyen

Int. Cl.
CPC ...
H10K 85/60 (2023.01); H10K 50/12 (2023.01); H10K 50/125 (2023.01); H10K 85/30 (2023.01); H10K 101/25 (2023.01); H10K 101/30 (2023.01); H10K 101/40 (2023.01); H10K 102/00 (2023.01);
U.S. Cl.
CPC ...
H10K 85/633 (2023.02); H10K 50/12 (2023.02); H10K 50/125 (2023.02); H10K 85/324 (2023.02); H10K 85/342 (2023.02); H10K 85/346 (2023.02); H10K 85/371 (2023.02); H10K 85/623 (2023.02); H10K 85/636 (2023.02); H10K 85/6574 (2023.02); H10K 85/6576 (2023.02); H10K 2101/25 (2023.02); H10K 2101/30 (2023.02); H10K 2101/40 (2023.02); H10K 2102/351 (2023.02);
Abstract

An organic electroluminescent device, a display panel, and a display device are disclosed. The organic electroluminescent device includes: an anode and a cathode disposed opposite to each other, a light emitting layer located between the anode and the cathode, an electron blocking layer located between the light emitting layer and the anode, and a hole transport layer located between the electron blocking layer and the anode. The light emitting layer includes an exciplex formed by mixing an electron-type host material and a hole-type host material, and a guest material with which the exciplex is doped. The electron mobility of the hole transport layer is greater than that of the electron blocking layer.

Find Patent Forward Citations

Qiu, Lixia. (2026). Exciplex based organic electroluminescent device, display panel, and display device (U.S. Patent No. 12777840). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12777840

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